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Two very large parallel, insulating sheets are separated by 8 cm. (Only a small portion near the center of the sheets is shown.) Sheet A has a charge density σA. A coordinate system is chosen such that the sheets lie in the yz-plane, with sheet A at x = 0. A graph of the electric field as a function of x is shown at right below.
Find the charge σB (sign and magnitude) of sheet B in terms of charge density σA of sheet A.
A rocket-powered hockey puck has a thrust of 1.5 N and a total mass of 1.0 kg. How far does the puck land from the base of the table
two spheres with uniform surface charge density first with a radius of 7.2 cm and the second with a radius of 5.0 cm
In a swimming race, a father gives his 4 year old son a 10 s head start. The pool is 25 m long. Find at what time does the father come alongside his son
A cart with mass 200gmoving on a frictionless linear air track at an initial speed of 1.1m/sundergoes an elastic collision with an initially stationary cart of unknown mass. What is the speed of the two-cart center of mass
A 30.6 g block of copper whose temperature is 435 K is placed in an insulating box with a 125 g block of lead whose temperature is 127 K. What is the equilibrium temperature of the two-block system
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 128-kg laser sensor that measures the thickness of the ice. The helicopter and the sensor both move only in the horizontal direction and have a horizontal accel..
Three charges are located at 100-m intervals along a horizontal line: a charge of -3.0 C on the left, 2.0 C in the middle, and 1.0 C on the right. What is the electric field on the horizontal line halfway between the -3.0 C and 2.0 C charges
A proton is placed at the origin of any y coordinate system. The proton is floating because an electron is fixed on the y-axis, How far away from the proton in the electron
A 50-g block of copper at -15?C is added to 100g of water in a 71-g aluminum cup. The cup and the water have an initial temperature of 4.0?C. Find the equilibrium temperature of the cup
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.7 × 10-4m2, find the cross-sectional area of the water stream at a point 0.11 m below the faucet
Determine, using the chemical balance equations, the stoichiometric fuel:air ratio for the complete combustion of C12H26 in air of 21% Oxygen, 78% nitrogen. Using this value of AFR, determine the combustion temperature rise for a typical gas turbi..
Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 12.8 cm-3, and their speed is 615 km/s. Find the current density of these protons
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